**FILE** In this Nov. 30, 2007 file photo, backdrop by cooling towers of a power plant and chemical factory, miners shovel coal at a mine in Xiahuayuan county, north China’s Hebei province. China has raised electricity prices for the second time in two months to offset soaring coal prices blamed for shortages that threaten to disrupt the economy. The surprise decision late Tuesday, Aug. 19, 08, to impose a new increase so soon after a price hike in July highlighted Beijing’s struggle to ensure adequate power supplies for the booming economy, which is expected to grow by at least 9 percent this year. (AP Photo/Oded Balilty, File)
Coal workers
